Magneto-Optical Properties of Co/Noblemetal Artificial Superlattices

钴/贵金属人造超晶格的磁光特性

• 批准号: 01550011
• 负责人: TSUNASHIMA Shigeru
• 金额: $ 1.54万
• 依托单位: Nagoya Univ.
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1989
• 资助国家: 日本
• 起止时间: 1989 至 1990
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-01550011/
• 关键词: Artificial superlattice; Magneto-Optical effect; Cobalt; Palladium; Platinum; ブラチナ; 人工格子; 多層磁性薄膜; 貴金属

Pd/Co and Pt/Co multilayers have a large perpendicular magnetic anisotropy and are expected candidates for high density magneto-optical recording material. In this research, magneto-optical properties of Pd/Co and Pt/Co multilayers prepared by RF sputtering method have been investigated. Magneto-optical Kerr spectra of Pd/Co and Pt/Co multilayers resemble those of PdCo and PtCo alloys and the Kerr rotation is larger than was expected of Co layers. The Kerr spectra of multilayers are affected by the multilayered structure. We considered the effect of multireflection and the effect of interfaces (alloying effect). The effect of multi-reflection was studied by a calculation, and we found that the effect of multireflection was small. The Kerr rotation decreased with increasing period namely with decreasing interface layers. This result showed that the Kerr rotation of Pd/Co and Pt/Co multilayers caused mainly from interfaces.We also investigated the Kerr spectra of Ir/Co and Rh/Co multilayers, and it was found that these spectra resemble the Co spectrum.

Pd/Co和Pt/Co多层膜具有较大的垂直磁各向异性，有望成为高密度磁光记录材料的候选材料。本文研究了射频溅射法制备的Pd/Co和Pt/Co多层膜的磁光性能。Pd/Co和Pt/Co多层膜的磁光Kerr谱与PdCo和PtCo合金相似，且Kerr旋转比Co层的预期大。多层材料的克尔光谱受多层结构的影响。我们考虑了多反射效应和界面效应（合金效应）。通过计算研究了多反射效应，发现多反射效应很小。克尔旋转随周期的增加而减小，即随界面层数的减少而减小。结果表明，Pd/Co和Pt/Co多层膜的Kerr旋转主要由界面引起。我们还研究了Ir/Co和Rh/Co多层膜的克尔光谱，发现这些光谱与Co光谱相似。

项目成果

K.Nakamura: "MagnetoーOptical Properties of PdCo Based Multilayered Films" IEEE Trans.Magn.25. 3758-3760 (1989)

K. Nakamura：“基于 PdCo 的多层薄膜的磁光特性”IEEE Trans.Magn.25 (1989)。

K.Nakamura: "Pcrpendicular Magnetic Anisotropy of PdCo Alloy in multilayered structure" J.Magn.Magn.Mat.(1991)

K.Nakamura：“多层结构中 PdCo 合金的垂直磁各向异性”J.Magn.Magn.Mat.(1991)

K.Nakamura,S.Tsunashima S.Iwata and S.Uchiyama: "Magneto-Optical Properties of PdCo Based Multilayered Films" IEEE Trans.on Magnetics. 25. 3758-3760 (1989)

K.Nakamura、S.Tsunashima S.Iwata 和 S.Uchiyama：“基于 PdCo 的多层薄膜的磁光特性”IEEE Trans.on Magnetics。

K.Nakamura: "Karr Rotation and Coercive Field of Co/Pd,Pt Multilayers for MagnetoーOptical Recording Medid" To dpper in proceeding on International Symposium or Optical Strage(1990). (1990)

K.Nakamura：“用于磁光记录介质的 Co/Pd、Pt 多层的卡尔旋转和矫顽场”，在国际研讨会或光学舞台上进行（1990 年）。

K. Nakamura: "Kerr Rotation and Coercive Field of Co/Pd, Pt Multilayers for Magneto-Optical Recording Media" Proceedings on International Symposium on Optical Strage.

K. Nakamura：“磁光记录介质的 Co/Pd、Pt 多层的克尔旋转和矫顽场”国际光存储研讨会论文集。